When you lift a 12. ounce beverage can from the table top to your mouth, you do approximately how much work?
A) 1 Calorie
B) 1 Watt
C) 1 Kw-h
D) 1 Joule
E) 1 erg
D
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Pressure: When a box rests on a round sheet of wood on the ground, it exerts an average pressure p on the wood. If the wood is replaced by a sheet that has half the diameter of the original piece, what is the new average pressure?
A. 4p
B. 2p
C. p
D. p/2
E. p/4
Dawn images of Vesta show that it is much wider than it is tall. What might be the reason for its irregular shape?
What will be an ideal response?
The strength of an induced electric or magnetic field depends on
A) strength of magnetic poles. B) alignment of magnetic domains. C) rate of change of the induced field. D) all of the above E) none of the above
As more lamps are connected in a series circuit, the overall current in the power source
A) increases. B) decreases. C) stays the same.